Improved waste-valve toe pumps



@auch tstrs gstrnt @frn -Lette'rs'latent No. 77,865, dated May 12, 1868.

IMPROVED WASTE-VALVE POR PUMPS..

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TO ALL WIIOM IT MAY- CONCERN:

Be it knonn that I, GuononE; BRETTELL, of Rochester, in the county of Monroe, and State of Nen- York, have invented a new and useful Escape-Valve for submerged and other Pumps5 andIdo hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, making part of this specica'tion, in which the figure is a vertical central section of my invention.

The-plans usually adopted for rendering pumps anti-freezing are very objectionable, on account of the constant leakage during the act of pumping. 'Theobjecttof this invention is toremove those objections,and at the same time provide a very rapid discharge through the escapelvalvc'immediately after thepumping` ceases.

To enable others to make and use my invention, Invill describe its 'construction andoperuition.

y I provide a curvedsection, A, which is cored out, as shown, and'is made to' receive the valve-'stem s. This stem has a conical ila`nge,f,`tted to a corresponding seat at a. i The llower end of the stem is.. provided with,

the disk -7c, which operates within' thechamb'efC.' `The` upper en'dof the vulve-stem snvlde with a' shoulder, at c, upon which the counterbalanee-weight B rests while the pump is in action. Thcre.is a hole drilled in the section A, at e, to receive the upper end ofthe valye-stem, and in which it has bearing. Thecunterbalance- Y weight B may be made cup-shaped in the underface, and it is fitted loosely uponthc small section ofthestem, so as to move upon it freely. The main pump-pipe, short sections, D, of which'ure'shown attached, is tapped into each end .of the cast section Thissection maylie located at any point between theplatforru and the pump.`

As soon as the action'of the -pump commences, `the ascending column of water strikes `the diskikknnd forces it to the position shown, to which point it is Vlimited by theconef striking its seat, and thereby `closing the escape-opening. As soon vas'ftheactionof the Vpump ceases, the enction of the column `ot' irater drives the disk down upon the end of. the pump-pipe atp, which forms its seat, and the disk thereby constitutes a. checkvalve, and atthe same time it opens the port v ofthe es cpefvalv'e. The water contained in. the pipes above the valve is thrown out through this port, rand,'strikng in the cup of the,countcrbalancesweight B, it is forced up against the face g, and the water is thrown back into thevel'l.- As theY water reacts after. the action ofthe` pump ceases,v it is` preventedl from running under the disk lc, by being forced through the contraetedV port z, und I nade tostrile upon the upper face, which closes the port. .Y K l lhe port o may bemade as large as may be desirable, and of course the larger it is the more rapidly it will empty the pump. i

The valve-stem may be made of brass or other suitable metal.

The weight B might probably bedispenscd with, and the val-ve 'made to work very well.

What I claim :1s my invention, and desire to secure by Letters Patent, is-' y y Y 1 The arrangement, in pump-pipes, of the automatic escape-valve, substantially in the manner herein shown and described, and for the purposes set forth.

GEO E. BRETTELL.

Witnesses:

WM. S. yLouennonouen, FRED. A. HATCH. 

